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Finding the Fourth Proportional to 615,842.40, 924,070.80 and 349,807.20

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Solution

The fourth proportional to 615,842.40, 924,070.80 and 349,807.20 is: 524,885.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,842.40 : 924,070.80 = 349,807.20 : x
  2. Step 2: Convert to fraction form
    615,842.40/924,070.80 = 349,807.20/x
  3. Step 3: Cross multiply
    615,842.40x = 924,070.80 × 349,807.20
  4. Step 4: Simplify right side
    615,842.40x = 323,246,619,149.76
  5. Step 5: Solve for x
    x = 323,246,619,149.76/615,842.40
  6. Step 6: Final answer
    x = 524,885.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.